Trolley.



PATENTED MAY 15, 1906.. J. R. DEILY.

TROLLEY. APPLICATION FILED SEPT.5,1905.

UNITED s'rA'rns PATENT onnron.

JACOB R. DElLY, or PHILADELPHIA, PENNSYLVANIA.

TROLLEY.

Application filed September 5,

To all whom it may concern:

Be it known that I, JACOB R. DEILY, a citizen of theUnited States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented anew and useful Improvement in Trolleys ,'of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification. Y

My invention relates to trolleys of the twowheel type, and has for its object to so construct the trolley as to avoid serious results in case the trolley jumps off the conductingwire and strikes a cross-wire or other obstruction.

The invention consists of a pole to which is pivoted a reversible wheel-frame adapted to revolve three hundred and sixty degrees on its ivot; the construction being such that the w' eel-frame is pivoted substantially at its center of gravity and carries at its opposite free ends the two trolley-wheels, whose axes are normally in horizontal alinement with the pivot of the wheel-frame.

A two-wheeled trolley possesses certain advantages, chief among which is the greater certainty with which it maintains contact with the conducting-wire. If, however, for any reason it slips off the wire and contacts with an obstruction, such as a cross-wire, it

catches or hooks in the crosswire, and if the car 1s going at any speed is liable to tear the crosswire from its fastenings, causing the conducting-wire to drop and damage the car and imperil the safety of the passengers. Moreover, the trolley itself is likely to sustain serious injury. If, however, a trolley constructed in accordance with my invention slips off the conducting-Wire and contacts with a cross-wire or any other obstruction the latter as it is engaged by the Wheel-frame causes the wheel-frame to revolve on its pivot and at the same time perm ts the Wheelframe to pass freely under the cross-wire.

My invention will be more readily understood by reference to the accompanying drawings, in which Figure 1 is a plan view of the wheel-frame and the upper end of the pole. Fig. 2 is a side elevation of the same. Figs. 3, 4, and 5 are diagrammatic views showing the successive positions assumed by the wheel-frame when disengaged from the conducting-wire and while passing a cross-wire.

a is the trolley-pole provided at its upper Specification of'Letters Patent.

end

Patented May 15, 1906.

1905. $eria1No. 276,953-

wlth arms I) 12, forming a fork to receive the wheel-frame e. The outer ends arms I) b are rovided with the inwardly-extending bearings c a, between which is secured a pin (1, on' which the trolley-wheel frame 6 freely turns. The Wheel-frame is thus pivotally secured to the trolley-pole and is free to revolve completely about its axis. The outer ends of the wheel-frame are provided with the arms ff and g g, forming forks to receive the wheels hand i, respectively.

and 7c arepins secured between the arms of the forks i f and g g, respectively, and on which the w eels h and i, respectively, freely revolve.

The trolley-wheel frame is pivotally secured at substantially its center of gravity, and the pivotal connections are so arranged that a straight line connecting the axes of the trolley-wheels intersects the pivot of the wheel-frame.

Z is the usual rope by which the trolley-pole is operated by the conductor. The rope is secured to the pole itself at m and not to the WheeLframe.

I will now trolley in case it jumps wire and strlkes a cross-wire.

describe the operation of the from the conductor- Fig. 3 illustrates such a disengaged trolley just before contacting with a cross-wlre w. Fig. 4 illustrates the trolley just after it has struck the cross-Wire. It will be observed that the action of the cross-wire upon the trolley is to turn the wheel'frame on its ivot. Fig. -5 illustrates the trolley While it is still engaged with the cross-wire and just before it has freed itself therefrom. It will be observed that the wheel-frame still continues to turn on its pivot, and it will be understood that after it has turned approximately one hundred and eighty degrees it will free itself entirely from the cross-Wire.- The operation described imposes no strain on the cross-wire that it is not easily able to withstand. The force with which the Wheel-frame contacts with the cross-wire is suflicient ordinarily to cause the wheel-frame to spin a number of times about its axis; but it will speedily come to rest.

Itis easy to reset the trolley. It is only necessary for the conductor to manipulate the pole so as to brin one of the wheels in contact with the con noting-wire, and the upward tension of the pole will cause the other wheel to set itself. of the pivotal connections being as before deof the The arrangement 'ters Patent,'is-

. straightline connecting the axes 0 the trol ivoted at the opposite ends of the wheel- -'rame, the pivotal connectlons being so an ranged that a straight line connecting the Wlll work equally well whether the whee frame is in the position shown in Figs. 1 and 2, in which the wheel h is in advance of the wheel '5, or whether the wheel-frame is reversed, so that the wheel die in advance of the wheel h. v 1

Havin now fully described my invention, what I c aim, and desire to protect by Letscribed, it will be understood that the trollely of the wheel-frame. I

3. In a trolley, the combination with apole aving a forked outer end, a wheel-trame ithin the fork of the pole and reversible and of the pole-fork, grooved trolley-wheels piv oted at opposite ends of the Wheel-frame and adapted to normally simultaneously en-,- gagethe conducting-wire, and a control-cord :secured'at the outer part of the pole, the ar- 40 rangement being such that the wheel-frame is pivoted at about its center of gravity and that a straight line connecting'the ax'esof the trolle -wheels intersects the pivot of. the whee -frarne. 45 Icy-wheels intersects the' pivot of the wheel- In-te'stimon'y' of which invention I have frame. I v l hereunto set my hand, at Philadelphia, on

2. In a trolley, the combination with a pole this 25thday of August, 1'90 i having a forked outer end, a wheel-frame JACOB R.-DEILY.

1. In a trolley, the combination with a pole, of a wheel-frame pivoted thereto at about its center of gravity and freely revoluble completely aroundthe same, and ooved trolley-wheels pivoted at opposite and: of the wheel-frame and adapted tonormally simultaneously engage the conducting-Wire, the pivotal'connections being s o arran ed that a Within the fork of'the pole reversible. and Witnesses: freely revoluble in bearings on the-outer ends FRANK S. BUSSER, of the pole-fork, and grooved trolley-Wheels E, WALL.

axes of the trolley-wheels intersects the pivot 3 o' freely revoluble in bearings on the outer end 3-5. 

